<template>
    <div :class="{ hidden: hidden }" class="pagination-container">
        <el-pagination
                :background="background"
                v-model:current-page="currentPage"
                v-model:page-size="pageSize"
                :layout="layout"
                :page-sizes="pageSizes"
                :pager-count="pagerCount"
                :total="total"
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
        />
    </div>
</template>

<script setup>
import {scrollTo} from '@/utils/scrollUtil';

const props = defineProps({
    total: {
        required: true,
        type: Number,
    },
    page: {
        type: Number,
        default: 1,
    },
    limit: {
        type: Number,
        default: 20,
    },
    pageSizes: {
        type: Array,
        default() {
            return [10, 20, 30, 50];
        },
    },
    // 移动端页码按钮的数量端默认值5
    pagerCount: {
        type: Number,
        default: document.body.clientWidth < 992 ? 5 : 7,
    },
    layout: {
        type: String,
        default: 'total, sizes, prev, pager, next, jumper',
    },
    background: {
        type: Boolean,
        default: true,
    },
    autoScroll: {
        type: Boolean,
        default: true,
    },
    hidden: {
        type: Boolean,
        default: false,
    },
});

const emit = defineEmits();

const currentPage = computed({
    get() {
        return props.page;
    },
    set(val) {
        emit('update:page', val);
    },
});

const pageSize = computed({
    get() {
        return props.limit;
    },
    set(val) {
        emit('update:limit', val);
    },
});

function handleSizeChange(val) {
    if (currentPage.value * val > props.total) {
        currentPage.value = 1;
    }
    emit('pagination', {page: currentPage.value, limit: val});
    if (props.autoScroll) {
        scrollTo(0, 800);
    }
}

function handleCurrentChange(val) {
    emit('pagination', {page: val, limit: pageSize.value});
    if (props.autoScroll) {
        scrollTo(0, 800);
    }
}
</script>

<style scoped>
.pagination-container {
    background: #fff;
    padding: 32px 16px;
}

.pagination-container.hidden {
    display: none;
}
</style>
